Similar experiment device for simulating coal seam roof water inrush
A similar experiment, coal seam roof technology, applied in the direction of applying stable tension/pressure to test material strength, etc., can solve the problems of complex stress on the roof, inability to simulate the stress situation, and inability to simulate the impact of water inrush on the roof, etc. To achieve the effect of improving the meaning of guidance
Pending Publication Date: 2020-12-11
北京大地高科地质勘查有限公司
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Problems solved by technology
[0002] There are many kinds of safety problems encountered in coal mining. If each safety problem cannot be dealt with in a timely and effective manner, it will threaten the safety of personnel. Among them, the casualties caused by roof water inrush are more prominent. Therefore, it is necessary to strengthen the protection against roof water inrush. At present, similar experiments are generally used to simulate the water inrush of coal seam roofs. However, the existing similar experimental devices only calculate the permeability of rocks through triaxial seepage experiments to study the relevant mechanism of roof water inrush. The experimental results It is relatively one-sided and cannot simulate the influence of the overall landform on the roof water inrush. In addition, in actual situations, the stress on the roof is more complicated, and the real stress on the roof cannot be simulated only by simple three-axis force application.
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[0032] see Figure 1~3 , in an embodiment of the present invention, a similar experimental device for simulating water inrush from the coal seam roof, which includes an experimental platform 1, a confining pressure chamber 4, a roof simulation assembly 7, a water chamber 8, and a pressure simulation assembly 21, wherein the confining pressure The outer circumference of the bottom of the warehouse 4 is covered with a mounting seat 2, and the mounting seat 2 is fixed on the test bench 1;
[0033] The roof simulation assembly 7 is placed in the confining pressure chamber 4, the roof simulation assembly 7 can support and wrap the roof simulation body, and can use the water tank 8 to inject water from above the roof simulation body;
[0034] The bottom of the confining pressure chamber 4 is also coaxially embedded with a sealing plunger 3, and a liquid outlet pipe 13 runs through the inside of the sealing plunger 3, and the liquid outlet pipe 13 can collect the water body that pene...
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The invention discloses a similar experiment device for simulating coal seam roof water inrush, which comprises an experiment table, a confining pressure bin, a roof simulation assembly, a water bin and a pressure simulation assembly, and is characterized in that a mounting seat is sleeved on the outer circumference of the bottom of the confining pressure bin, the mounting seat is fixed on the experiment table, and the roof simulation assembly is placed in the confining pressure bin; the top roof simulation assembly can support and wrap the roof simulation body, and water can be injected fromthe upper portion of the roof simulation body through a water sump; a sealing plunger is further coaxially embedded into the bottom of the confining pressure bin, a liquid outlet pipe penetrates through the interior of the sealing plunger, and the liquid outlet pipe can collect water penetrating through the roof simulation body; the pressure simulation assembly is further arranged at the top of the confining pressure bin, and the pressure simulation assembly can simulate point pressure and surface pressure alternately applied to the upper portion of the top plate simulation assembly.
Description
technical field [0001] The invention belongs to the technical field of coal seam roof water inrush simulation, in particular to a similar experimental device for simulating coal seam roof water inrush. Background technique [0002] There are many kinds of safety problems encountered in coal mining. If each safety problem cannot be dealt with in a timely and effective manner, it will threaten the safety of personnel. Among them, the casualties caused by roof water inrush are more prominent. Therefore, it is necessary to strengthen the protection against roof water inrush. At present, similar experiments are generally used to simulate the water inrush of coal seam roofs. However, the existing similar experimental devices only calculate the permeability of rocks through triaxial seepage experiments to study the relevant mechanism of roof water inrush. The experimental results It is relatively one-sided, and cannot simulate the influence of the overall landform on roof water inr...
Claims
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IPC IPC(8): G01N3/12
CPCG01N3/12
Inventor 张彪黄辅强孙红波肖明国王越阴慧胜历彦福
Owner 北京大地高科地质勘查有限公司